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Radiant|Lab Grown|GIA

2.51ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • GIA 6501487009

Certificate GIA 6501487009

Diamond specifications and retailer prices

From HK$4,676 HKD
$596 USD
As of October 27, 2026
Save HK$25,297 HKD (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$29,973 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.51ct lab-grown radiant diamond

This 2.51ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6501487009. Listed at 21 retailers as of October 27, 2026, with prices from HK$4,676 to HK$29,973, a HK$25,297 spread on the same certified stone. Brilliant Earth lists it at HK$29,973. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6501487009
Dimensions9.87 × 6.65 × 4.44 mm
L/W Ratio1.48
Top View
9.87 mm6.65 mm2.51 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501487009
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: HK$29,973 HKD|Low: HK$4,488 HKD|High: HK$29,973 HKD|Avg: HK$10,080 HKD|+49.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 3HK$4,676 HKD
Retailer 8HK$5,241 HKD
Retailer 4HK$5,798 HKD
Retailer 6HK$5,798 HKD
Retailer 12HK$6,327 HKD
Retailer 10HK$6,826 HKD
Retailer 2HK$7,287 HKD
Retailer 7HK$7,768 HKD
Retailer 16HK$8,199 HKD
Retailer 14HK$8,412 HKD
Retailer 9HK$8,416 HKD
Retailer 15HK$14,398 HKD
Retailer 5HK$15,261 HKD
Retailer 13HK$15,418 HKD
Retailer 11HK$25,221 HKD
Brilliant EarthHK$29,973 HKD

37 data points across 16 retailers

21 retailersHK$4,676 HKD to HK$29,973 HKD

A
Cheapest Retailer
-
HK$4,676 HKD
$596 USD
A
Retailer 2
-
HK$5,241 HKD
$668 USD
View
Final sale: no returns
A
Retailer 3
-
HK$5,241 HKD
$668 USD
View
B+
Retailer 4
-
HK$5,798 HKD
$739 USD
View
Retailer 5
-
HK$5,798 HKD
$739 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
HK$6,327 HKD
View
B+
Retailer 7
-
HK$6,826 HKD
$870 USD
View
B+
Retailer 8
-
HK$7,287 HKD
£731 GBP
View
B+
Retailer 9
-
HK$7,768 HKD
$990 USD
View
B+
Retailer 10
-
HK$8,019 HKD
$1,022 USD
View
B+
Retailer 11
-
HK$8,199 HKD
$1,045 USD
View
B+
Retailer 12
-
HK$8,412 HKD
€1,021 EUR
View
B+
Retailer 13
-
HK$8,416 HKD
£845 GBP
View
B
Retailer 14
-
HK$14,398 HKD
$1,835 USD
View
B
Retailer 15
-
HK$15,261 HKD
$1,945 USD
View
Retailer 16
-
HK$15,418 HKD
$1,965 USD
View
Price last confirmed 8 days ago
B
Retailer 17
-
HK$17,045 HKD
$2,172 USD
View
B
Retailer 18
-
HK$18,768 HKD
$2,392 USD
View
B
Retailer 19
-
HK$19,271 HKD
£1,934 GBP
View
B
Retailer 20
-
HK$25,221 HKD
£2,531 GBP
View
Most Expensive
C
Brilliant Earth
11751828A · Oct 29
HK$29,973 HKD
$3,820 USD
View
20 more retailers have this diamond
Prices start from HK$4,676 HKDSave up to HK$25,297 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
2.51ct Radiant
HK$4,676 HKD